Grease-cup.



G. DONGES.

GREASE CUP. APPLICATION HLEU UCT. 1. I916.

l,234,307. Patented July 24, 1917.

GEORGE IJONGES, OF PHILADEL?HIA, PENNSYLVAN IA.

G'BEASE- CUP.

Specification oi Letters Patent. Patented July 24, 1917- Applicatlon tiled October 7. 1916. Serial No. 124,231.

1 b all mm it only COIU'CTIL.

Be it known that I, imnmm Donors, a citizen. ol' the i liiieil Fitnies, residing at lfl'iilndelphia, in ihr count of Philadelphia illlll Stale o'l lcnnsylvzinin. lnii'c inrenlied. certain new and useful linprovemunlm in (ircaseGuim, 01' which the following; is n s 'iecificution.

My invention relate in iinproreniei'ils in grease cups for lubricating nn-poses in which n piston employed nithin n grease cont-mining cylinil-er for forcing ihc grease from the cyliinilcr nnd through llu? discharge opening in l'he cup in the pal-i in he lnhri cnted.

inning [he gimme inlincle'. n? glhr iv prrzn i ih lninniiiy oi. go so wiihin the on to in Flltll without ol'icniug the cup. further ohjccl' of my invention is to ]";i.{)\l(i6i 1 Lily, n. novel moons of forming; ii i i ht joint between the 'bofiiom of the cylinder and 'i'he horly oi the cup; secondly :1 no rel ll'li'nillfi for holding the cap or cover for the cup in place; and, thirdly, a novel packing for the piston which shall. cnusc a. close contact of the piston witlui'he necr rilv irregular in nor surface of the glass rrviinder. To these en'ls he iJi iHiiHii Unilsisis in the nov l (on- -5iI'iH'lJlUii and rmnninntions in" urls: hereinn'ili-cr i'nll) lil. Jiliil illllili.

in iize ilL'iU'liiiJli lug: drnningrs. ilinsrnb inn in inreniin'n.

Flfi'llli'; l ii a grease cup .inn thereof. on line 2-;---2 of 1. g. 1. v Fig. 3 hori-knniizrl section. on line 3- 3 of Fig. ii. Illigpi is :1 horizontal seciion of {he piston, on line l-4 of 5. Fig. 5 is :1 vertical section through the piston. r

Referring to the drawings, 5 designnics a cylindrical casing open niits 10 and hawing a'bottom wall (lprorided with a. down wardly-extenriing, screw-thrended nipple 7 adopted to be screwed into the part to be 'lubricnted, the nipple 7 having a. grease dis "charge opening 8 exicnding tlierethrmigh.

The sides of the earring have lnrg: ings 9 therein througl'i which rnn a glass cylinder 1 which is li c;ii;.;ci within the casing.

The cylinder 10 is adapted to receive and contain the grease, and it rests upon a Suitable parking ring 11 which is interposed between the lower end of the cylinder 10 and the helium wall 6 of the casing 5. The cylinder 10 is forced down upon the packlug ring .11]. by a coiled spring 12 located within the upper portion of the casing 5 Zlllli llllllfl'po', between a cap or cover 13 for the cnsi: q.

The cup 13 has a downwardly-extending i'lnnge 14: which surrounds and is fitted to 11g and which is provided 011 oppodes thereof with slots 15. These slots [71 extend ingwvnrdly from the bottom of the flange 1i and then on inclines in opposite direc'iions in each other, as shown, and are :ulzipierl to receive p1 16 which project fixedly 'iz'ull'l the e sing 5. The pins 16 rest nornmiiy in depressed sockets 17 in the flange i l oh the upper or inner ends of the slots 15, and the parts of the flange 14:

forming the sockets 17 are forced upwardly ngninst the pins 16 by 'the action of the spring '12, thereby holding the cap 18 in place and preventing accidental turning thereof.

When it is desired to remove the cap 13,

it is turned lay-hand in the direction of the' re. oi? the operation just! described re zip 5 rho cap 13 to the casing 5i l in the cylinder. 5 is a piston 18 having a.- rod or stem 19 which extends upwari'liy therefrom and into a hollow, cylindricnl headQO which is closed ht its upper end nod which .is e-xteriorly screw-ihreaded and screwed into and through the cap 13 in a. manner to be vertically adjustable therein by turning the head 20. Encircling the rod 19 is a. coiled spring 21 which ex-.

tends from. the top of the piston 18 up tint-(nigh the. l'liilinri head 20 to the top lhm'eci'. and whn-h is adapted to force the.

piston down upon the grease within the cylindcr 10 so cause the propenfeeding of the gin-(wise izhrongh the discharge opening 8 to the part to be lubricated. By adjusting the head20 the pressure of the spring 21 against the piston 18 maybe nicely regulated. The

upper end of the' stem 19 has a head 22 of a diameterslightly less than the interior diameter of the spring whose exterior diameter is slightly less than the interior -diameter of the head 20. Thus the piston 18 is guided and prevented from tilting.

As the interior walls of glass cylinders are neither uniform in diameter nor perfectly round and free froin other irregulari- I ties, I provide the piston 18 with an expansible and contractible packing ring-23 and construct it as follows: On the lower end of the rod 19 are two'disks or plates 24 and 25, the lower one 24: of which is screwed onto the lower end of the rod 19, and the upper one 25 of which is located between the lower plate 24; and a flange or collar 26 on the stem '19. The packing ring 23 is located between the plates 24 and and it is adapted to be clamped thereby and it comprises split annular sections 27, preferably formed 25 of leather and placed one upon the other so that the split portion 28 of one section will be lapped by the body portion of another section, as shown in Fig. 4, thus providing a tight joint between the cylinder 10 and 30 the piston- 18, and ermitting the entire ring 23 to expand and contract. Within the packing ring 23 is a. split, annular spring ring 29- which operates to force all parts of the ring l8 outwardly against the inner wall of the glass cylinder 10 and causes the ring 23 v to engage the Wall of the cylinder 10 with the proper degree'of pressure at-all times during the vertical movement of the piston,

irrespective of any irregularities in the inner 40 wall of the glass cylinder. By turning the stem 19 within thelower plate 2a, the distance between the plates 24 and 25 may be increased slightly, thereby lessening the pressure of the plates 24 and 25 against the i5 packing ring 18 and permitting the spring 29 to force the ring 23 out against the cylinder l0 with greater pressure. Thus the premure of the packing ring 23 may .be

regulated by adjusting the plates 24 and 25. *v I claim:

1,-5 In a grease cup, a casing having a discharge opening in the bottom thereof and havin a window in the side thereof, a glass cylinder within said casing and visible 55. throiigh the Window, packing between the lower end of the cylinder and the casing, a removable cap on the upper end of the easing, means to hold the cap in place upon the casing, and yielding means interposed between the top of the cylinder and the cap and pressing the-cylinder agains. the packmg.

2. In a grease cup, a basing having a discharge opening in the bottom thereof and having a window in the side thereof, a glass cylinder within said casing and visible through the window, packing between the lower end of the cylinder and the casing, a removable cap on the upper end' of the casing, the casing and the cap having cooperating parts holding the cap in place on the easing, and yielding means interpose between the upper end of the cylinder an the cap and pressing said cooperating parts together and pressing the cylinder against the packmg. I

3. In a grease cup, a casing having a. dis-. charge opening in the bottom thereof and having a window in the side thereof, a glass cylinder within said casingand visible through the window, packing between the lower end of the cylinder and the casing, a removable cap on the upper end of the casing, the casing having a pin projecting therefrom, the cap having a slot formed therein receiving the pin and the slot having an inclined portion adapted to engage the pin and move the cap toward the lower end of the cylinder when the cap is turned, and.

yielding means interposed between the cylinder and the cap and adapted toforce the cap up and the cylinder down.

4. :In a grease cup, a casinghaving a discharge opening in the bottom thereof and having a window in the side thereof, a glass cylinder within said casing and visible through the window, packing between the lower end of the cylinder and the casing, a removable cap on the upper end of the easing, the casing having a pin projecting therefrom, the cap having a slot formed therein receiving the pin and the slot having an inclined portion terminating at its upper end in a depressed socket, the'inclined portion of the slot being adapted to engage the pin and move the cap toward the lower end of the cylinder and the socket being thereafter adapted to receive the pin when the cap is turned, and yielding means interposed between the cylinder and the cap and adapted to force the cap up and the cylinder down.

In testimony whereof I my signature I hereto.

GEORGE DONGES. 

